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LibJS/JIT: Implement static exception handling

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This commit is contained in:
Evgeniy Baskov 2023-10-28 19:43:55 +03:00 • committed by Andreas Kling
parent 1341f4438d
commit da45bd3fde
2 changed files with 39 additions and 181 deletions
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17
Userland/Libraries/LibJS/JIT/Compiler.h
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@ -37,7 +37,6 @@ private:
static constexpr auto STACK_POINTER = Assembler::Reg::RSP;
static constexpr auto REGISTER_ARRAY_BASE = Assembler::Reg::RBX;
static constexpr auto LOCALS_ARRAY_BASE = Assembler::Reg::R14;
static constexpr auto UNWIND_CONTEXT_BASE = Assembler::Reg::R15;
# endif
# define JS_ENUMERATE_COMMON_BINARY_OPS_WITHOUT_FAST_PATH(O) \
@ -159,9 +158,6 @@ private:
void check_exception();
void handle_exception();
void push_unwind_context(bool valid, Optional<Bytecode::Label> const& handler, Optional<Bytecode::Label> const& finalizer);
void pop_unwind_context();
void jump_to_exit();
void native_call(void* function_address, Vector<Assembler::Operand> const& stack_arguments = {});
@ -187,7 +183,6 @@ private:
struct BasicBlockData {
size_t start_offset { 0 };
Assembler::Label label;
Vector<size_t> absolute_references_to_here;
};
BasicBlockData& block_data_for(Bytecode::BasicBlock const& block)
@ -197,13 +192,23 @@ private:
});
}
void set_current_block(Bytecode::BasicBlock const& block)
{
m_current_block = &block;
}
Bytecode::BasicBlock const& current_block()
{
return *m_current_block;
}
HashMap<Bytecode::BasicBlock const*, NonnullOwnPtr<BasicBlockData>> m_basic_block_data;
Vector<u8> m_output;
Assembler m_assembler { m_output };
Assembler::Label m_exit_label;
Assembler::Label m_exception_handler;
Bytecode::Executable& m_bytecode_executable;
Bytecode::BasicBlock const* m_current_block;
};
}